Backlight dimming in power-aware mobile displays

被引：9
作者：
Iranli, Ali [1 ]
Lee, Wonbok [1 ]
Pedram, Massoud [1 ]
机构：
[1] Univ Southern Calif, Los Angeles, CA 90089 USA
来源：
43RD DESIGN AUTOMATION CONFERENCE, PROCEEDINGS 2006 | 2006年
关键词：
algorithms; human factors; measurement; LCDs; backlight scaling; human visual system;
D O I：
10.1109/DAC.2006.229297
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents a temporally-aware backlight scaling (TABS) technique for video streams. The goal is to maximize energy saving in the display system by means of dynamic backlight dimming subject to a user-specified tolerance on the video distortion. The video distortion itself comprises of (i) an intra-frame (spatial) distortion component due to frame-sensitive backlight scaling and transmittance function tuning and (ii) an inter-frame (temporal) distortion component due to large-step backlight dimming across multiple frames and modulated by the physiological characteristics of the human visual system. The proposed backlight scaling technique is capable of efficiently computing the flickering effect online and subsequently using a measure of the temporal distortion to appropriately adjust the slack on the intra-frame spatial distortion. The proposed technique has been implemented on the Apollo Testbed II hardware platform. Actual current measurements on this platform demonstrate the superiority of TABS compared to previous backlight dimming techniques.
引用
收藏
页码：604 / +
页数：2
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